Panasonic CU-5E36QBU User Manual

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Page 1

Order No: PAPAMY1312037CE

Air Conditioner

Outdoor Unit CU-5E36QBU

Destination

U.S.A.

Canada

Please file and use this manual together with the service manual for Model No. CS-E9NKUAW CS-E12NKUAW CS-E18NKUA, CS-E24NKUA, CS-ME7QKUA, Order No. PHAAM1111087C1 PAPAMY1204088CE PAPAMY1312045CE

This service information is designed for experienced repair technicians only and is not designed for use by the general public. It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product. Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or repair the product or products dealt with in this service information by anyone else could result in serious injury or death.

WARNING

In order to avoid frostbite, be assured of no refrigerant leakage during the installation or repairing of refrigerant circuit.

PRECAUTION OF LOW TEMPERATURE

Page 2

TABLE OF CONTENTS

PAGE PAGE

1. Safety Precautions ............................................. 3

2. Specifications ..................................................... 5

3. Dimensions ......................................................... 9

4. Refrigeration Cycle Diagram ........................... 10

5. Block Diagram .................................................. 11

6. Wiring Connection Diagram ............................ 12

7. Electronic Circuit Diagram .............................. 13

8. Printed Circuit Board ....................................... 14

8.1 Main Printed Circuit Board ......................... 14

8.2 Noise Filter Printed Circuit Board ............... 15

8.3 Display Printed Circuit Board ..................... 15

9. Installation Information .................................... 16

9.1 Check Points .............................................. 16

10. Installation Instruction ..................................... 17

10.1 Select The Best Location ........................... 17

10.2 Install The Outdoor Unit ............................. 18

10.3 Connect The Piping .................................... 18

10.4 Evacuation Of The Equipment ................... 19

10.5 Connect The Cable To The Outdoor

Unit ............................................................. 20

10.6 Heat Insulation ............................................ 20

10.7 Disposal Of Outdoor Unit Drain Water ....... 21

15. Troubleshooting Guide ....................................31

15.1 Self Diagnosis Function ..............................31

16. Disassembly and Assembly Instructions ......34

16.1 Outdoor Unit Removal Procedure ..............34

17. Technical Data ..................................................37

17.1 Operation Characteristics ...........................37

18. Exploded View and Replacement Parts

List .....................................................................69

11. Operation Control ............................................. 22

11.1 Cooling Operation ....................................... 22

11.2 Heating Operation ...................................... 23

12. Simultaneous Operation Control .................... 24

13. Protection Control ............................................ 25

13.1 Freeze Prevention control (Cool) ............... 25

13.2 Dew Prevention control (Cool) ................... 25

13.3 Electronic Parts Temperature Rise

Protection 1 (Cool) ...................................... 25

13.4 Electronic Parts Temperature Rise

Protection 2 (Cool) ...................................... 25

13.5 Cooling overload control (Cool) .................. 26

13.6 Heating overload control (Heat) ................. 26

13.7 Extreme Low Temperature Compressor

low pressure protection control (Heat) ....... 26

13.8 Deice Control .............................................. 27

13.9 Time Delay Safety Control

(Restart Control) ......................................... 27

13.10 30 seconds Force Operation ...................... 27

13.11 Total Current Control .................................. 27

13.12 IPM (power transistor) Protection

Control ........................................................ 27

13.13 Compressor Protection Control

(Gas leak detection control 1) .................... 28

13.14 Compressor Protection Control

(Gas leak detection control 2) .................... 28

13.15 Valve close detection control ...................... 28

13.16 Compressor discharge high pressure

protection control ........................................ 28

14. Servicing Mode ................................................. 29

Page 3

1. Safety Precautions

 Read the following “SAFETY PRECAUTIONS” carefully before perform any servicing.  Electrical work must be installed or serviced by a licensed electrician. Be sure to use the correct rating of the

power plug and main circuit for the model installed.

 The caution items stated here must be followed because these important contents are related to safety. The

meaning of each indication used is as below. Incorrect installation or servicing due to ignoring of the instruction will cause harm or damage, and the seriousness is classified by the following indications.

WARNING

CAUTION

 The items to be followed are classified by the symbols:

This symbol denotes item that is PROHIBITED from doing.

 Carry out test run to confirm that no abnormality occurs after the servicing. Then, explain to user the operation,

care and maintenance as stated in instructions. Please remind the customer to keep the operating instructions for future reference.

1. Do not modify the machine, part, material during repairing service.

This indication shows the possibility of causing death or serious injury.

This indication shows the possibility of causing injury or damage to properties.

WARNING

2. If wiring unit is supplied as repairing part, do not repair or connect the wire even only partial wire break. Exchange the whole wiring unit.

3. Do not wrench the fasten terminal. Pull it out or insert it straightly.

4. Engage dealer or specialist for installation and servicing. If installation or servicing done by the user is defective, it will cause water leakage, electrical shock or fire.

5. Install according to this installation instructions strictly. If installation is defective, it will cause water leakage, electric shock or fire.

6. Use the attached accessories parts and specified parts for installation and servicing. Otherwise, it will cause the set to fall, water leakage, fire or electrical shock.

7. Install at a strong and firm location which is able to withstand the set’s weight. If the strength is not enough or installation is not properly done, the set will drop and cause injury.

8. For electrical work, follow the local national wiring standard, regulation and the installation instruction. An independent circuit and single outlet must be used. If electrical circuit capacity is not enough or defect found in electrical work, it will cause electrical shock or fire.

9. This equipment is strongly recommended to install with Earth Leakage Circuit Breaker (ELCB) or Residual Current Device (RCD). Otherwise, it may cause electrical shock and fire in case equipment breakdown or insulation breakdown.

10. Do not use joint cable for indoor/outdoor connection cable. Use the specified indoor/outdoor connection cable, refer to Installation Instruction CONNECT THE CABLE TO THE INDOOR UNIT and connect tightly for indoor/outdoor connection. Clamp the cable so that no external force will be acted on the terminal. If connecting or fixing is not perfect, it will cause heat up or fire at the connection.

11. Wire routing must be properly arranged so that control board cover is fixed properly. If control board cover is not fixed perfectly, it will cause heat-up or fire at the connection point of terminal, fire or electrical shock.

12. When install or relocate air conditioner, do not let any substance other than the specified refrigerant, eg. air etc. mix into refrigeration cycle (piping). (Mixing of air etc. will cause abnormal high pressure in refrigeration cycle and result in explosion, injury etc.).

13. Do not install outdoor unit near handrail of veranda. When installing air-conditioner unit at veranda of high rise building, child may climb up to outdoor unit and cross over the handrail and causing accident.

14. This equipment must be properly earthed. Earth line must not be connected to gas pipe, water pipe, earth of lightning rod and telephone. Otherwise, it may cause electric shock in case equipment breakdown or insulation breakdown.

15. Keep away from small children, the thin film may cling to nose and mouth and prevent breathing.

16. Do not use unspecified cord, modified cord, joint cord or extension cord for power supply cord. Do not share the single outlet with other electrical appliances. Poor contact, poor insulation or over current will cause electrical shock or fire.

17. Tighten the flare nut with torque wrench according to specified method. If the flare nut is over-tightened, after a long period, the flare may break and cause refrigerant gas leakage.

Page 4

18. For R410A models, when connecting the piping, do not use any existing (R22) pipes and flare nuts. Using such same may cause abnormally high pressure in the refrigeration cycle (piping), and possibly result in explosion and injury. Use only R410A materials. Thickness of copper pipes used with R410A must be more than 1/32" (0.8mm). Never use copper pipes thinner than 1/32" (0.8mm). It is desirable that the amount of residual oil is less than 0.0014 oz/32.8 ft (40 mg/10m).

19. During installation, install the refrigerant piping properly before run the compressor. (Operation of compressor without fixing refrigeration piping and valves at opened condition will cause suck-in of air, abnormal high pressure in refrigeration cycle and result in explosion, injury etc.).

20. During pump down operation, stop the compressor before remove the refrigeration piping. (Removal of refrigeration piping while compressor is operating and valves are opened condition will cause suck-in of air, abnormal high pressure in refrigeration cycle and result in explosion, injury etc.).

21. After completion of installation or service, confirm there is no leakage or refrigerant gas. It may generate toxic gas when the refrigerant contacts with fire.

22. Ventilate if there is refrigerant gas leakage during operation. It may cause toxic gas when refrigerant contacts with fire.

23. Do not insert your fingers or other objects into the unit, high speed rotating fan may cause injury.

24. Must not use other parts except original parts described in catalog and manual.

25. Using of refrigerant other than the specified type may cause product damage, burst and injury etc.

CAUTION

1. Do not install the unit at place where leakage of flammable gas may occur. In case gas leaks and accumulates at surrounding of the unit, it may cause fire.

2. Carry out drainage piping as mentioned in installation instructions. If drainage is not perfect, water may enter the room and damage the furniture.

3. Tighten the flare nut with torque wrench according to specified method. If the flare nut is over-tightened, after a long period, the flare may break and cause refrigerant gas leakage.

4. Do not touch outdoor unit air inlet and aluminium fin. It may cause injury.

5. Select an installation location which is easy for maintenance.

6. Pb free solder has a higher melting point than standard solder; typically the melting point is 50°F – 70°F (30°C – 40°C) higher. Please use a high temperature solder iron. In case of the soldering iron with temperature control, please set it to 700 ± 20°F (370 ± 10°C). Pb free solder will tend to splash when heated too high (about 1100°F / 600°C).

7. Power supply connection to the room air conditioner. Power supply cord shall be UL listed or CSA approved 3 conductor with minimum AWG12 wires. Power supply point should be in an easily accessible place for power disconnection in case of emergency. In some countries, permanent connection of this air conditioner to the power supply is prohibited. Fix power supply connection to a circuit breaker for permanent connection. Use NRTL approved fuse or circuit breaker (rating refers to name plate) for permanent connection.

8. Do not release refrigerant during piping work for installation, servicing, reinstallation and during repairing a refrigerant parts. Take care of the liquid refrigerant, it may cause frostbite.

9. Installation or servicing work: It may need two people to carry out the installation or servicing work.

10. Do not install this appliance in a laundry room or other location where water may drip from the ceiling, etc.

11. Do not sit or step on the unit, you may fall down accidentally.

12. Do not touch the sharp aluminum fins or edges of metal parts. If you are required to handle sharp parts during installation or servicing, please wear hand glove. Sharp parts may cause injury.

Page 5

2. Specifications

Item Unit OUTDOOR UNIT

Indoor Unit Combination 2.0kW + 2.0kW + 2.0kW + 2.0kW + 2.5kW

Power Source 1 Phase, 208-230V, 60Hz (Power supply from outdoor unit)

Capacity

Running Current A 19.0 - 17.2

Cooling Operation

Heating Operation

Maximum Current A 21.3

Starting Current A 19.0

Circuit Breaker Capacity A 30

Dimension

Net Weight kg (lb) 83 (183)

Connection Cable 3 + 1 (Earth) min AWG16

Pipe Length Range (1 room) m (ft) 3 ~ 25 (9.8 ~ 82.0)

Maximum Pipe Length (Total Room) m (ft) 80 (262.4)

Refrigerant Pipe Diameter

Compressor

Air Circulation

Fan Speed High (Cooling / Heating) RPM 750 / 740

Heat Exchanger

Air Volume High (Cooling / Heating)

Refrigerant Control Device Expansion Valve

Refrigerant Oil FV50S

Refrigerant (R410A) g (oz) 3.40k (120)

Electrical

Data

Noise

Capacity

Electrical

Data

Noise

Height mm (inch) 999 (39-11/32)

Width mm (inch) 940 (37-1/32)

Depth mm (inch) 340 (13-13/32)

Liquid Side mm (inch) 6.35 (1/4)

Gas Side mm (inch) 9.52 (3/8), (E24: 12.70 (1/2))

Type Hermetic Motor / Rotary

Motor Type Brushless (4-poles)

Rated Output W 1.30k

Type Propeller Fan

Motor Type DC Motor (8-poles)

Rated Output W 90

Type Plate fin configuration forced draft type

Tube Material Copper

Fin Material Aluminum (Blue Coated)

Row / Stage 2 / 46

FPI 19

Power Input kW 3.75 (0.55 ~ 3.86)

EER W/W 2.82 (5.27 ~ 2.98)

Sound Pressure Level dB-A (H/L) 55 / -

Sound Power Level dB (H/L) 71 / -

Running Current A 14.8 - 13.4

Power Input kW 2.90 (0.53 ~ 4.24)

COP W/W 3.82 (6.42 ~ 3.42)

Sound Pressure Level dB-A (H/L) 55 / -

Sound Power Level dB (H/L) 71 / -

kW 10.56 (2.9 ~ 11.5)

BTU/h 36000 (9900 ~ 39000)

kW 11.1 (3.4 ~ 14.5)

BTU/h 37800 (11600 ~ 49500)

/min

(ft

/min)

71.2 (2512) / 70.1 (2475)

Page 6

Item Unit OUTDOOR UNIT

Dry Bulb Wet Bulb

Cooling

Indoor Operation Range

Heating

Cooling

Outdoor Operation Range

Heating

Maximum °C (°F) 32 (89.6) 23 (73.4)

Minimum °C (°F) 16 (60.8) 11 (51.8)

Maximum °C (°F) 30 (86.0) —

Minimum °C (°F) 16 (60.8) —

Maximum °C (°F) 46 (114.8) 26 (78.8)

Minimum °C (°F) -10 (14.0) —

Maximum °C (°F) 24 (75.2) 18 (64.4)

Minimum °C (°F) -15 (5.0) -16 (3.2)

Note

 Specifications are subject to change without notice for further improvement.

Page 7

 Multi Split Combination Possibility:

o A single outdoor unit enables air conditioning of up to five separate rooms.

Page 8

 Indoor Unit : CS-ME7QKUA, CS-E9NKUAW, CS-E12NKUAW, CS-E18NKUA, CS-E24NKUA  Outdoor Unit : CU-5E36QBU

5 Room 4 Room 3 Room 2 Room 1 Room

Indoor Unit Capacity

(kW)

2.0+2.0+2.0+2.0+2.0 10.0 2.0+2.0+2.0+2.0 8.0 2.0+2.0+2.0 6.0 2.0+2.5 4.5 2.0 2.0

2.0+2.0+2.0+2.0+2.5 10.5 2.0+2.0+2.0+2.5 8.5 2.0+2.0+2.5 6.5 2.0+3.2 5.2 2.5 2.5

2.0+2.0+2.0+2.0+3.2 11.2 2.0+2.0+2.0+3.2 9.2 2.0+2.0+3.2 7.2 2.0+5.0 7.0 3.2 3.2

2.0+2.0+2.0+2.0+5.0 13.0 2.0+2.0+2.0+5.0 11.0 2.0+2.0+5.0 9.0 2.0+7.0 9.0 5.0 5.0

2.0+2.0+2.0+2.0+7.0 15.0 2.0+2.0+2.0+7.0 13.0 2.0+2.0+7.0 11.0 2.5+2.5 5.0 7.0 7.0

2.0+2.0+2.0+2.5+2.5 11.0 2.0+2.0+2.5+2.5 9.0 2.0+2.5+2.5 7.0 2.5+3.2 5.7

2.0+2.0+2.0+2.5+3.2 11.7 2.0+2.0+2.5+3.2 9.7 2.0+2.5+3.2 7.7 2.5+5.0 7.5

2.0+2.0+2.0+2.5+5.0 13.5 2.0+2.0+2.5+5.0 11.5 2.0+2.5+5.0 9.5 2.5+7.0 9.5

2.0+2.0+2.0+2.5+7.0 15.5 2.0+2.0+2.5+7.0 13.5 2.0+2.5+7.0 11.5 3.2+3.2 6.4

2.0+2.0+2.0+3.2+3.2 12.4 2.0+2.0+3.2+3.2 10.4 2.0+3.2+3.2 8.4 3.2+5.0 8.2

2.0+2.0+2.0+3.2+5.0 14.2 2.0+2.0+3.2+5.0 12.2 2.0+3.2+5.0 10.2 3.2+7.0 10.2

2.0+2.0+2.0+3.2+7.0 16.2 2.0+2.0+3.2+7.0 14.2 2.0+3.2+7.0 12.2 5.0+5.0 10.0

2.0+2.0+2.0+5.0+5.0 16.0 2.0+2.0+5.0+5.0 14.0 2.0+5.0+5.0 12.0 5.0+7.0 12.0

2.0+2.0+2.5+2.5+2.5 11.5 2.0+2.0+5.0+7.0 16.0 2.0+5.0+7.0 14.0 7.0+7.0 14.0

2.0+2.0+2.5+2.5+3.2 12.2 2.0+2.5+2.5+2.5 9.5 2.0+7.0+7.0 16.0

2.0+2.0+2.5+2.5+5.0 14.0 2.0+2.5+2.5+3.2 10.2 2.5+2.5+2.5 7.5

2.0+2.0+2.5+2.5+7.0 16.0 2.0+2.5+2.5+5.0 12.0 2.5+2.5+3.2 8.2

2.0+2.0+2.5+3.2+3.2 12.9 2.0+2.5+2.5+7.0 14.0 2.5+2.5+5.0 10.0

2.0+2.0+2.5+3.2+5.0 14.7 2.0+2.5+3.2+3.2 10.9 2.5+2.5+7.0 12.0

2.0+2.0+2.5+3.2+7.0 16.7 2.0+2.5+3.2+5.0 12.7 2.5+3.2+3.2 8.9

2.0+2.0+2.5+5.0+5.0 16.5 2.0+2.5+3.2+7.0 14.7 2.5+3.2+5.0 10.7

2.0+2.0+3.2+3.2+3.2 13.6 2.0+2.5+5.0+5.0 14.5 2.5+3.2+7.0 12.7

2.0+2.0+3.2+3.2+5.0 15.4 2.0+2.5+5.0+7.0 16.5 2.5+5.0+5.0 12.5

2.0+2.0+3.2+3.2+7.0 17.4 2.0+3.2+3.2+3.2 11.6 2.5+5.0+7.0 14.5

2.0+2.0+3.2+5.0+5.0 17.2 2.0+3.2+3.2+5.0 13.4 2.5+7.0+7.0 16.5

2.0+2.5+2.5+2.5+2.5 12.0 2.0+3.2+3.2+7.0 15.4 3.2+3.2+3.2 9.6

2.0+2.5+2.5+2.5+3.2 12.7 2.0+3.2+5.0+5.0 15.2 3.2+3.2+5.0 11.4

2.0+2.5+2.5+2.5+5.0 14.5 2.0+3.2+5.0+7.0 17.2 3.2+3.2+7.0 13.4

2.0+2.5+2.5+2.5+7.0 16.5 2.0+5.0+5.0+5.0 17.0 3.2+5.0+5.0 13.2

2.0+2.5+2.5+3.2+3.2 13.4 2.5+2.5+2.5+2.5 10.0 3.2+5.0+7.0 15.2

2.0+2.5+2.5+3.2+5.0 15.2 2.5+2.5+2.5+3.2 10.7 3.2+7.0+7.0 17.2

2.0+2.5+2.5+3.2+7.0 17.2 2.5+2.5+2.5+5.0 12.5 5.0+5.0+5.0 15.0

2.0+2.5+2.5+5.0+5.0 17.0 2.5+2.5+2.5+7.0 14.5 5.0+5.0+7.0 17.0

2.0+2.5+3.2+3.2+3.2 14.1 2.5+2.5+3.2+3.2 11.4

2.0+2.5+3.2+3.2+5.0 15.9 2.5+2.5+3.2+5.0 13.2

2.0+3.2+3.2+3.2+3.2 14.8 2.5+2.5+3.2+7.0 15.2

2.0+3.2+3.2+3.2+5.0 16.6 2.5+2.5+5.0+5.0 15.0

2.5+2.5+2.5+2.5+2.5 12.5 2.5+2.5+5.0+7.0 17.0

2.5+2.5+2.5+2.5+3.2 13.2 2.5+3.2+3.2+3.2 12.1

2.5+2.5+2.5+2.5+5.0 15.0 2.5+3.2+3.2+5.0 13.9

2.5+2.5+2.5+2.5+7.0 17.0 2.5+3.2+3.2+7.0 15.9

2.5+2.5+2.5+3.2+3.2 13.9 2.5+3.2+5.0+5.0 15.7

2.5+2.5+2.5+3.2+5.0 15.7 2.5+5.0+5.0+5.0 17.5

2.5+2.5+2.5+5.0+5.0 17.5 3.2+3.2+3.2+3.2 12.8

2.5+2.5+3.2+3.2+3.2 14.6 3.2+3.2+3.2+5.0 14.6

2.5+2.5+3.2+3.2+5.0 16.4 3.2+3.2+3.2+7.0 16.6

2.5+3.2+3.2+3.2+3.2 15.3 3.2+3.2+5.0+5.0 16.4

2.5+3.2+3.2+3.2+5.0 17.1

3.2+3.2+3.2+3.2+3.2 16.0

Total Indoor

Capacity

(kW)

Indoor Unit

Capacity (kW)

Total Indoor

Capacity

(kW)

Indoor Unit

Capacity

(kW)

Total Indoor

Capacity

(kW)

Indoor Unit

Capacity

(kW)

Total Indoor

Capacity

(kW)

Indoor Unit

Capacity

(kW)

Total Indoor

Capacity

(kW)

Page 9

3. Dimensions

Page 10

4. Refrigeration Cycle Diagram

Page 11

5. Block Diagram

Page 12

6. Wiring Connection Diagram

ResistanceofC

ompressorWindings

COMPRESSOR

CONNECTOR

SMOOTHING

V )

BLUE

(

CAPACITOR

RY-PWR

GRY

RAT2 (GRAY)

FUSE 401

(30A 250V)

)

YELLOW

(

FUSE 1

(T3.15A

L250V)

)

BLUE

AC2

(

AC1

(BROWN)

RECTIFICATION

123

WHITE

AC2 (BLUE)

CIRCUIT

FAN MO TOR

ORG

CN-FM1

(WHITE)

CN-PSW1

PFC

CIRCUIT

PFC

CAPACITOR

WHITE

)

WWWWWWWWW

WHITE

(

)

CN-DATA

ELECTRONIC CONTROLLER

COMMUNICATION

CIRCUIT

(WHITE) CN-COM

357

ORG

123

(BLUE)

( CN-DATA

(NOISE FILTER)

5KD240XAL21 (Ω)

CONNECTION

U )

RED

(

Q10

)

BROWN

AC1

(

)

BLACK

DCN

(

)

RED

DCP

(

RBL

)

GRAY

RAT1

(

GRY

REACTOR

0.72

0.73

0.71

U-V

V-W

U-W

CONTROL BOARD

Y/G

DCN

DCP

FG2

FG1

AC-WHT

CN-WHT

)

BLACK

( )

RED

(

(GREEN)

ACN1

)

BLACK

WHITE

AC-BLK

(

)

WHITE

(

CN-BLK (BLACK)

NOISE FILTER

CIRCUIT

(WHITE)

ACL1

(BLACK)

LIQUID PIPE TEMP. SENSO R

(UNIT A) (THERMISTOR)

LIQUID PIPE TEMP. SENSO R

(UNIT B) (THERMISTOR)

LIQUID PIPE TEMP. SENSO R

(UNIT C) (THERMISTOR)

LIQUID PIPE TEMP. SENSO R

(UNIT D) (THERMISTOR)

LIQUID PIPE TEMP. SENSO R

HIGH PRESSURE SW.

CN-TH3

(WHITE)

RECTIFICATION

(T3.15A L250V) FUSE 2

(WHITE)

CONTROLLER

(DISPLAY)

JP1

COOL ONLY

123

CN-DISP1

(WHITE)

CN-DISP1

WWWWWWW

ELECTRONIC

BL W

GAS PIPE TEMP. SENSOR

(UNIT A) (TH ERMIS TOR)

GAS PIPE TEMP. SENSOR

(UNIT B) (TH ERMIS TOR)

GAS PIPE TEMP. SENSOR

(UNIT C) (TH ERMIS TOR)

GAS PIPE TEMP. SENSOR

(UNIT D) (THERMISTOR)

GAS PIPE TEMP. SENSOR

(UNIT E) (THERMISTOR)

CN-TH4

CIRCUIT

POWER SAVE

SWITCHING

POWER SUPPLY

(WHITE)

CN-DISP2

WWWWWWWWWWWWW

PUMP DOWN

PRIORITY M ODE

BL W

123

(UNIT E) (THERMISTOR)

(WHITE)

ELECTRONIC CONTROLLER

CIRCUIT

WIRING CHECK

OPERATION TEST

OUTDOOR TEMP.

SENSOR (THERMISTOR)

(MAIN)

(YELLOW)

(WHITE)

BL W

CN-TH1

(WHITE)

CN-NMODE

CN-NMODE1

123

CN-HOT

HEAT EXCHANGER TEMP.

SENSOR (THERMISTOR)

RY-HOT

(BLUE) 1

DEFROST TEMP.

SENSOR (THERMISTOR)

CN-TH2

(YELLOW)

CN-DIS

(WHITE)

MMMMM

CN-EV5

(BLACK)

8 1

(RED)

CN-EV4 7

(BLUE)

CN-EV3 6

CN-EV2 1

(YELLOW)

RY-HT

CN-EV1

(WHITE)

CN-HT

COIL (4-WAY VALVE)

ELECTRO MAGNETIC

(BLACK)

HEATER

RED

YELLOW (YEL)

BLUE

SENSOR (THERMISTOR)

DISCHARGE TEMP.

UNIT E

VALVE)

ELECTRO-

(EXPANSION

MAGNETIC COIL

UNIT D

VALVE)

ELECTRO-

(EXPANSION

MAGNETIC COIL

UNIT C

VALVE)

ELECTRO-

(EXPANSION

MAGNETIC COIL

UNIT B

VALVE)

ELECTRO-

(EXPANSION

MAGNETIC COIL

UNIT A

VALVE)

ELECTRO-

(EXPANSION

MAGNETIC COIL

(RED)

(TRADEMARK)

COMP. TERMINAL

(BLU)

INDICATED ON TERMINAL COVER

THE PARENTHESIZED LETTERS IS

CONTROL BOARD

TERMINAL BOARD

OWER SUPPLY

INGLE PHASE

TERMINAL BOARD

C 208/230V

0Hz

TO INDOOR UNIT A

TO INDOOR UN IT B

TO INDOOR U NIT C

TO INDOOR UNIT D

TO INDOOR U NIT E

REMARKS

B:BLUE

BL : BLACK

W:WHITE

R:RED

Y:YELLOW

GRY : GRAY

G:GREEN

ORG : ORAN GE

Y/G :YELLOW/GREEN

BR : BROW N

Page 13

7. Electronic Circuit Diagram

Page 14

8. Printed Circuit Board

8.1 Main Printed Circuit Board

Page 15

8.2 Noise Filter Printed Circuit Board

8.3 Display Printed Circuit Board

Page 16

9. Installation Information

9.1 Check Points

Page 17

10. Installation Instruction

10.1 Select The Best Location

 If an awning is built over the unit to prevent direct

sunlight or rain, be careful that heat radiation from the condenser is not obstructed.

 There should not be any animal or plant which

could be affected by hot air discharged.

 Keep the spaces indicated by arrows from wall,

ceiling, fence or other obstacles.

 Do not place any obstacles which may cause a

short circuit of the discharged air.

Refrigerant piping size

Outdoor Unit CU-5E36***

Liquid - side ø1/4" (ø6.35 mm) thickness 1/32" (t0.8 mm)

Gas - side

* In case of indoor is CS-E24***, then ø1/2"

(ø12.7 mm) thickness 1/32" (t0.8 mm) gas-pipe size must be used together with CZ-MA2P (pipe size expander)

Min. total piping length for additional gas 147.6 ft (45 m)

 If total piping length of all indoor units exceeds the

minimum length listed above, additionally charge with 0.2 oz (20g) of refrigerant (R410A) for each additional feet (meter) of piping.

Outdoor Unit CU-5E36***

Allowable piping length of each indoor unit (min. ~ max.) 9.8 ft ~ 82.0 ft (3 m ~ 25 m)

Allowable total piping length of all indoor unit 262.4 ft (80 m) or less

Height difference between indoor and outdoor unit

Height difference between indoor unit

ø3/8" (ø9.52 mm) thickness 1/32" (t0.8 mm)

*(ø1/2" (ø12.7 mm) thickness 1/32" (t0.8 mm))

Outdoor Unit CU-5E36***

Outdoor unit located on upper side

Outdoor unit located otherwise

Outdoor unit located on upper side

Outdoor unit located otherwise

Allowable piping length

49.2 ft (15 m) or less

24.6 ft (7.5 m) or less

49.2 ft (15 m) or less

Page 18

Outdoor Unit Installation Guidelines

 Where a wall or other obstacle is in the path of outdoor unit’s intake or exhaust airflow, follow the installation

guidelines below.

 For any of the below installation patterns, the wall height on the exhaust side should be 47-1/4" (1200 mm) or

less.

10.2 Install The Outdoor Unit

 After selecting the best location, start installation

to Indoor/Outdoor Unit Installation Diagram.

1. Fix the unit on concrete or rigid frame firmly and horizontally by bolt nut (ø13/32" (ø10 mm)).

2. When installing at roof, please consider strong wind and earthquake. Please fasten the installation stand firmly with bolt or nails.

Model A B C D

CU-5E36***

24-13/32" (620 mm)

6-11/16"

(170 mm)

25/32"

(20 mm)

14-31/32"

(380.5 mm)

10.3 Connect The Piping

 Remove the cabinet side plate (metal) from the

unit by loosening six screws.

Connecting The Piping To Outdoor Unit

Decide piping length and then cut by using pipe cutter. Remove burrs from cut edge. Make flare after inserting the flare nut (locate at valve) onto the copper pipe. Align center of piping to valves and then tighten with torque wrench to the specified torque as stated in the table.

Do not over tighten, over tightening may cause gas leakage

Piping size Torque

1/4" [6.35 mm] [18 N•m (1.8 kgf.m)]

3/8" [9.52 mm] [42 N•m (4.3 kgf.m)]

1/2" [12.7 mm] [55 N•m (5.6 kgf.m)]

5/8" [15.88 mm] [65 N•m (6.6 kgf.m)]

3/4" [19.05 mm] [100 N•m (10.2 kgf.m)]

Gas Leak Checking

Pressure test to system to 400 PSIG with dry nitrogen, in stages. Thoroughly leak check the system. If the pressure holds, release the nitrogen and proceed to section 10.4.

Page 19

CUTTING AND FLARING THE PIPING

1. Please cut using pipe cutter and then remove the burrs.

2. Remove the burrs by using reamer. If burrs is not removed, gas leakage may be caused. Turn the piping end down to avoid the metal powder entering the pipe.

3. Please make flare after inserting the flare nut onto the copper pipes.

10.4 Evacuation Of The Equipment

WHEN INSTALLING AN AIR CONDITIONER, BE SURE TO EVACUATE THE AIR INSIDE THE INDOOR UNIT AND PIPES in the following procedure.

1. Connect a charging hose with a push pin to the Low side of a charging set and the service port of the gas side 3-way valve.

2. Connect the micron gauge between vacuum pump and service port of outdoor units.

3. Turn on the power switch of the vacuum pump and make sure that connect digital micron gauge and to pull down to a value of 500 microns.

4. To make sure micron gauge a value 500 microns and close the low side valve of the charging set and turn off the vacuum pump.

5. Disconnect the vacuum pump house from the service port of the 3-way valve.

6. Tighten the service port caps of gas side 3-way valve at a torque of 13.3 Ibf.ft (18 N•m) with a torque wrench.

7. Remove the valve caps of both of the 2-way valve and 3-way valve. Position both of the valves to “Open” using a hexagonal wrench (5/32" (4 mm)).

8. Mount valve caps onto the 2-way valve and 3-way valve. o Be sure to check for gas leakage.

 If micron gauge value does not descend 500 microns, take the following measures:

- If the leak stops when the piping connections are tightened further, continue working from step .

- If the leak does not stop when the connections are retightened, repair location of leak.

- Do not release refrigerant during piping work for installation and reinstallation.

- Take care of the liquid refrigerant, it may cause frostbite.

Page 20

10.5 Connect The Cable To The Outdoor Unit

1. Remove Plugs.

2. Fix the conduit connectors to the knock out holes with lock-nuts, then secure them.

3. Connecting wire between indoor unit and outdoor unit should be UL listed or CSA approved 4 conductor wires minimum AWG16 in accordance with local electric codes.

4. Wire Connection to the power supply (208/230V 60Hz) through circuit breaker. o Connect the UL listed or CSA approved

wires minimum AWG12 to the terminal board, and connect to other end of the wires to circuit breaker.

5. Connect the power supply cord and connecting wires between indoor unit and outdoor unit according to the diagram as shown.

6. For wire stripping and connection requirement, refer to the diagram below.

7. Secure the power supply cord and connection cables onto the control board with the holder.

8. Fix the cabinet side plate (metal) back to the original position with screws.

10.6 Heat Insulation

Use a material with good heat-resistant properties as the heat insulation for the pipes. Be sure to insulate both the gas-side and liquid-side pipes. If the pipes are not adequately insulated, condensation or water leakages may occur.

Liquid-side pipes

Gas-side pipes

Material shall withstand 248°F (120°C) or higher

Page 21

10.7 Disposal Of Outdoor Unit Drain Water

 If a drain elbow is used, the unit should be placed on a stand which is taller than 1-31/32" (50 mm).  If the unit is used in an area where temperature falls below 32°F (0°C) for 2 or 3 days in succession, it is

recommended not to use a drain elbow, for the drain water freezes and the fan will not rotate.

Page 22

11. Operation Control

11.1 Cooling Operation

11.1.1 Outdoor fan control

 When cooling operation is enabled, based on outdoor ambient temperature, fan motor control will be adjusted

according to figure below:

11.1.2 Annual Cooling control

 This control is to enable cooling operation when outdoor ambient temperature is low.  Control start conditions:

o Cooling operation is activated with compressor ON. o Outdoor ambient temperature is less than 59°F (15°C).

 Control contents:

o When the above conditions are fulfilled, based on outdoor pipe temperature, the outdoor fan motor will

operate according to figure below:

 To improve the judgment accuracy during annual cooling control, outdoor ambient temperature sampling for

2 minutes will be activated every 35 minutes under designated fan speed.

 Control stop conditions:

o When either one of the start conditions are not complied.

11.1.3 Cooling Powerful Operation 1

 During cooling operation, this control is to concentrate outdoor unit capability to the powerful operation enabled

indoor unit by temporary stop the capability supply to low load demand indoor units.

 Operation start condition:

o Powerful operation ON for targeted indoor unit.

 Operation content:

o If other indoor units (where Powerful operation are OFF) achieve setting temperature continuously for

1 minute after received powerful command from indoor unit, then capability supply to other indoor units are stopped for minimum 3 minutes. Capability supply stop period follows powerful operation period.

 Operation stops when comply either one of the following conditions:

o When other indoor units (where Powerful operation are OFF) is demand for capacity. o When the powerful operation is OFF for all indoor units. o When Quiet operation received from 1 indoor unit. o When protection control starts.

Page 23

11.2 Heating Operation

11.2.1 Outdoor fan control

 When heating operation is enabled, based on outdoor ambient temperature, fan motor control will be adjusted

according to figure below for Heating overload control:

11.2.2 Heating Room Temp Sampling Control

 To improve the judgment accuracy, indoor room temperature sampling starts when any indoor unit has stopped

capability supplied (heating thermo-off) during heating operation with compressor ON, outdoor unit will send signal to all thermo-off indoor units to ON fan motor and get room temperature sample.

 To prevent discharge temperature drop at indoor units which is ON when sampling the room temperature of

heating thermo-off units, the compressor frequency is increased accordingly.

 However, if indoor room temperature is much higher compare to remote control setting temperature, before

thermo-off, sampling of corresponding indoor unit will be cancelled.

11.2.3 Powerful Operation 2

 During cooling / heating operation, this control is to provide fast cooling / heating operation compare to normal

operation.

 Operation start if all condition below are complied:

o Powerful operation ON for indoor unit. o Not under Annual Cooling control.

 Operation content:

o Outdoor fan speed will adjust automatically. o Compressor frequency will adjust automatically.

 Operation stop when comply either one of the follow conditions:

o When the powerful operation is OFF for all indoor units. o When annual cooling control activated.

Page 24

12. Simultaneous Operation Control

 Operation modes which can be selected using the remote control unit:

o Automatic, Cooling, Dry, Heating and e-ion operation mode.

 Types of operation modes which can be performed simultaneously

o Cooling operation and Cooling, Dry or e-ion operation. o Heating operation and Heating operation.

 Types of operation modes which cannot be performed simultaneously

o During cooling operation, heating operation is impossible at another indoor unit in another room. o The priority is given to cooling operation if the cooling mode is selected first. In another room where heating

mode is selected afterward, the POWER LED blinks to indicate the heating operation is in standby condition, where the fan is stopped hence no discharged air.

o During heating operation, cooling operation is impossible at another indoor unit in another room. o The priority is given to heating operation if the heating mode is selected first. In another room where cooling

mode is selected afterward, the POWER LED blinks to indicate the cooling operation is in standby condition, where the fan is stopped hence no discharged air.

 Operation mode priority control

o The operation mode designated first by the indoor unit has priority. o If the priority indoor unit stops operation or initiates the fan operation, the priority is transferred to other indoor

units.

g” denotes the standby status in which the POWER LED blinks (ON for 2.5 seconds and OFF for 0.5 seconds)

“Waitin

and the fan is stopp

ed.

In the e-ion mode, priority is transferred to a non-priority unit. Note

 C: Cooling operation mode  D: Dry operation mode  H: Heating operation mode  E: e-ion operation mode

Page 25

13. Protection Control

13.1 Freeze Prevention control (Cool)

 When received freeze prevention signal from indoor unit, the compressor frequency changes according to indoor

heat exchanger temperature.

 When indoor unit request capability OFF due to freeze condition, immediately the capability supply to targeted

indoor unit stops.

13.2 Dew Prevention control (Cool)

 When received dew prevention signal from indoor unit, which according to indoor intake temperature and indoor

heat exchanger temperature the compressor frequency changes.

13.3 Electronic Parts Temperature Rise Protection 1 (Cool)

 This control prevents electronic parts temperature rise during cooling overload condition.  Start conditions:

o Outdoor ambient temperature is at protection region as shown in figure below:

o Outdoor unit total current is above 5.0A.

 Control content

o Outdoor fan speed is adjusted accordingly.

 Control stop condition

o When outdoor ambient temperature is back to normal region.

 During this control, outdoor fan speed does not reduce for Quiet operation.

13.4 Electronic Parts Temperature Rise Protection 2 (Cool)

 This control prevents electronic parts temperature rise during cooling/dry operation.  Start conditions:

o Total current is at protection region as shown in figure below:

 Control content

o Outdoor fan speed is adjusted accordingly.

 Control stop conditions

o When total current is back to normal region.

 During this control, outdoor fan speed does not reduce for Quiet operation.

Page 26

13.5 Cooling overload control (Cool)

 This control detect outdoor pipe temperature and perform the compressor frequency restriction during cooling

operation.

13.6 Heating overload control (Heat)

 This control detect indoor pipe temperature and perform the compressor frequency restriction during heating

operation.

 This control detect outdoor ambient temperature and perform the fan speed adjustment during heating operation.

13.7 Extreme Low Temperature Compressor low pressure protection control (Heat)

 This control is to prevent low pressure drops too low during extremely low outdoor ambient temperature to

improve the compressor reliability.

 During heating operation, when outdoor ambient temperature is in Zone 1, this control will be activated.

Compressor frequency restriction will be based on outdoor piping temperature.

Page 27

13.8 Deice Control

 When outdoor pipe temperature and outdoor air temperature is low, deice operation starts where indoor fan

motor and outdoor fan motor stop, indoor unit horizontal vane close and operation LED blink with compressor ON.

13.9 Time Delay Safety Control (Restart Control)

 The compressor will not restart within three minutes after compressor is stopped.  This control is not applicable if the power supply reset or after deice condition.

13.10 30 seconds Force Operation

 Once the compressor starts operation, it will not stop its operation for 30 seconds in order to cycle back

compressor oil.

 However, it can be stopped using remote control or Auto OFF/ON button at indoor unit.

13.11 Total Current Control

 By referring to table below, during normal (default) operation, the running current refer to Hi values and during

Power Save Mode, the running current refer to Lo values.

 When the outdoor unit total running current (AC) exceeds X value, compressor frequency will decrease.  If the running current does not exceed X value for 5 seconds, compressor frequency will increase.  However, if total outdoor unit running current exceeds Y value, compressor will be stopped immediately for

3 minutes.

Operation Mode

Cooling/Soft Dry (A)

Cooling/Soft Dry (B)

Cooling/Soft Dry (C)

Heating

Hi 19.43

Lo 13.56

Hi 17.32

Lo 13.56

Hi 17.32

Lo 13.56

Hi 20.06

Lo 14.03

 The first 30 minutes of cooling operation, (A) will be applied.

CU-5E36QBU

X (A) Y (A)

23.07

13.12 IPM (power transistor) Protection Control

 Overheating Prevention Control

o If IPM temperature rises to 176°F (80°C), outdoor fan speed will be increased. o When the IPM temperature rises to 203°F (95°C), compressor operation will stop immediately. o Compressor operation restarts when temperature decreases to 194°F (90°C). o If IPM temperature detected less than -22°F (-30°C), IPM is judged as open circuit (“F96” is indicated).

Page 28

 DC peak current control

o When IPMDC current exceeds set value of 30.0 ± 3.0 A, the compressor will stop. o If the DC peak current detected within 30 seconds after operation starts, compressor will restart after

1 minute.

o If the DC peak current detected 30 seconds or more after operation starts, compressor will restart after

2 minutes.

o Within 30 seconds after compressor restarts, if the DC peak current is exceeded set value continuously for

7 times, all indoor and outdoor relays will be cut off (“F99” is indicated).

 Error reset can be done by power supply reset.

13.13 Compressor Protection Control (Gas leak detection control 1)

 Control start conditions

o For 5 minutes, the compressor continuously operates and total current is low. o During Cooling or Soft Dry operation:

Indoor intake temperature — indoor piping temperature is below 39.2°F (4°C).

o During Heating operation:

Indoor pipe temperature — indoor intake temperature is below 37.4°F (3°C).

o Not during deice control. o Compressor ON with maximum frequency.

 Control content

o Compressor stops (and restart after 3 minutes) o If the conditions above happen 4 times within 60 minutes, the unit will stop operation (“F91” is indicated).

13.14 Compressor Protection Control (Gas leak detection control 2)

 This control detect gas leakage condition to prevent compressor damage.  Control start condition

o All connected indoor units capability supply ON. o Compressor ON with maximum frequency. o Not during annual cooling. o Compressor discharge temperature high.

 Control content

o Compressor OFF during this control (“F91” is memorized in EEPROM) o If the above conditions happen 2 times within 60 minutes, indoor units’ Timer LED will blinks (“F91” is

indicated at all indoor units)

13.15 Valve close detection control

 This control detects 3-way valve close condition to prevent damage to refrigerant cycle.  Start conditions:

o For all connected indoor units, if Indoor intake temperature — indoor piping temperature are between 28.4°F

(-2°C) and 35.6°F (2°C) continuously for 5 minutes after compressor ON at first cooling operation.

o The first cooling operation is defined as cooling operation is ON for less than 8 minutes after new installation

or after pump down.

 Control content

o During this control, compressor stop, indoor units’ Timer LED will blink. (“F91” is indicated at indoor units)

 Error reset can be done by power supply reset or reset by using remote control.

13.16 Compressor discharge high pressure protection control

 This control protect by using high pressure switch during operation.  Start conditions

o High pressure switch is activated (from normally close to open) when outdoor operation mode is cooling or

heating during compressor running.

 Control 1 content

o Compressor stop when high pressure switch is opened and restart after high pressure switch closed. If this

condition happen 4 times within 30 minutes, “F94” is indicated.

o After 30 minutes, counter is reset if this condition does not happen for 4 times.

 Control 1 stop conditions

o Power supply reset o Reset by using remote control

Page 29

14. Servicing Mode

14.1.1 Pump down operation (SW1)

 Operate the pump down process according to the following procedure.

o Confirm the valve on the liquid side and gas side are open. o Press PUMP DOWN button (SW1) on the Service PCB inside the outdoor unit for more than 5 seconds.

Pump down (cooling) operation is performed for 15 minutes.

o Set the liquid side 3 way valve to close position and wait until the pressure gauge indicates 0.01MPa

(1.45 PSI).

o Immediate set the gas side valve to close position and then press the PUMP DOWN button (SW1) to stop the

pump down operation. NOTE: Pump down operation will stop automatically after 15 minutes if PUMP DOWN switch (SW1) is not pressed again. Pump down operation is not started within 3 minutes after compressor is stopped.

LED 2 3 4 5 Message

Pump down operation in progress

3 minutes before operation end

Status

: Flashing

Pump down operation end

2 minutes before operation end

1 minute before operation end

14.1.2 Test Run Operation

 Test operation can be carried out using OPERATION TEST button (SW2) on the Service PCB inside the outdoor

unit.

 For Cooling test, press the OPERATION TEST button (SW2) for 5 seconds or more but less than 10 seconds,

LED1 and LED 2 will illuminate when shift into cooling test operation.

 For Heating test, press the OPERATION TEST button (SW2) for more than 10 seconds, LED 1 and LED 3 will

illuminate when shift into heating test operation.

 Press the OPERATION TEST button (SW2) again to cancel test operation.

Page 30

14.1.3 Wiring Error Check

 The unit capable to correct the wiring error automatically by following procedures.

o Confirm the valve on the liquid side and gas side is open. o Press WIRING CHECK button (SW3) on the Service PCB inside the outdoor unit for more than 10 seconds

to start wiring check operation.

o Wiring check process will complete in approximately 20 - 25 minutes. However, wiring check operation will

not start within 3 minutes after compressor is stopped. When outdoor air temperature is less than 41°F (5°C) or unit has abnormality, wiring check will not start. (See NOTE 2)

 The LED 2 to LED 6 in Service PCB inside the outdoor unit indicate the possibility of the correction as shown in

the table below:

LED 2 3 4 5 6 Message

Room A B C D E

All flashing Automatic correction impossible

LED2, 4, 6 and LED 3, 5

alternatively flashing

Flashing one after

Status

another

Other than above Unit has abnormality (NOTE 4)

 If automatic correct is impossible, check the

indoor unit wiring and piping manually.

NOTE:

1. For two rooms, LED 4,5 and 6 are not illuminated, for three rooms, LED 5 and 6 are not illuminated and for four rooms, LED 6 is not illuminated after wiring operation complete.

2. If the outdoor air temperature is less than 41°F (5°C) or unit has abnormality, wiring operation will not start.

3. After wiring check operation is complete, LED indication will illuminated until normal operation starts.

4. Follow the product diagnosis procedure. (Check the diagnostic label at the cabinet side plate.)

5. When LED 1 only illuminate, indicates that outdoor unit is operating normally.

Wiring check in progress

Automatic correction completed

14.1.4 Power Save Mode

 Power Save Mode can be enabled by pushing POWER SAVE switch (SW4) to ON before power supply ON.  When Power Save Mode is ON, the unit can be operate at lower running current where the breaker capacity not

achieve the requirement.

14.1.5 Mode priority function

 Mode priority function can be enabled by pushing MODE PRIORITY switch (SW5) to ON before power supply

ON.

 When Mode Priority Function is ON, the mode priority is given to higher capacity indoor units.

14.1.6 Cooling only function

 The unit capable to limit the operation mode to Cooling Mode only (Heating mode disabled) by cutting JP1

(COOL ONLY) before power supply ON.

 This function prevent wrong operation during the unit installed in server room.  This function could be disabled again by short the JP1 (COOL ONLY) before power supply ON.

Page 31

15. Troubleshooting Guide

15.1 Self Diagnosis Function

 The display screen of wireless remote control unit and the self-diagnosis LEDs (green) on the outdoor printed

circuit board in the outdoor unit can be used to identify the location of the problem. Refer to the table below to identify and solve the cause of the problem, and then re-start the air conditioner system.

 If the problem is solved and operation returns to normal.

LED 1 illuminates and others LED are off.

Page 32

Page 33

Page 34

16. Disassembly and Assembly Instructions

High voltages are generated in the electrical parts area by the capacitor. Ensure that the capacitor has discharged sufficiently before proceeding with repair work. Failure to heed this caution may result in electric shocks.

16.1 Outdoor Unit Removal Procedure

Caution! When handling electronic controller, be careful of electrostatic discharge.

16.1.1 Removing the Cabinet Top Plate

1. Remove the cabinet top plate (remove the 11 screws).

WARNING

16.1.2 Remove the Control Board Cover and Particular Plates

2. Remove the control board cover (remove the

5 screws).

Fig. 1

Fig. 2

Page 35

3. Remove the particular plate (remove the 3 screws).

4. Remove the particular plate (remove the 8 screws).

16.1.3 Removing the Cabinet Front Plate

5. Remove the cabinet front plate (remove the 7 screws).

Fig. 3

Fig. 4

Fig. 5

Page 36

16.1.4 Removing the Control P.C. Board

6. Remove the cover by release the screw.

7. Disconnect the connectors (lead wires of the compressor, sensors, and others).

8. Release the Control P.C. Board tab to remove the Control P.C. Board.

Fig. 6

16.1.5 Removing the Propeller Fan and Fan Motor

9. Remove the propeller fan by removing the nut turning clockwise as its center.

10. Disconnect the fan motor connector from the Control P.C. Board. Loosen the 4 fan motor mounting screws then remove the fan motor.

Fig. 7

Fig. 8

Page 37

17. Technical Data

17.1 Operation Characteristics

17.1.1 One Indoor Unit Operation

 Cooling Characteristic [Condition] Room temperature: 80.06°F (26.7°C) (DBT), 66.92°F (19.4°C) (WBT) Operation condition: High fan speed Piping Length: 7.5m (24.6 ft) 230V 60Hz

A) Indoor unit capacity: Cooling (2.0: CS-ME7QKUA), service mode frequency = 20 Hz

Page 38

 Cooling Characteristic [Condition] Room temperature: 80.06°F (26.7°C) (DBT), 66.92°F (19.4°C) (WBT)

Operation condition: High fan speed Piping Length: 7.5m (24.6 ft) 230V 60Hz

B) Indoor unit capacity: Cooling (2.5: CS-E9NKUAW), service mode frequency = 20 Hz

Page 39

 Cooling Characteristic [Condition] Room temperature: 80.06°F (26.7°C) (DBT), 66.92°F (19.4°C) (WBT) Operation condition: High fan speed Piping Length: 7.5m (24.6 ft) 230V 60Hz

C) Indoor unit capacity: Cooling (3.2: CS-E12NKUAW), service mode frequency = 34 Hz

Page 40

 Cooling Characteristic [Condition] Room temperature: 80.06°F (26.7°C) (DBT), 66.92°F (19.4°C) (WBT) Operation condition: High fan speed Piping Length: 7.5m (24.6 ft) 230V 60Hz

D) Indoor unit capacity: Cooling (5.0: CS-E18NKUA), service mode frequency = 49 Hz

Page 41

 Heating Characteristic [Condition] Room temperature: 69.98°F (21.1°C) (DBT), 60.08°F (15.6°C) (WBT) Operation condition: High fan speed Piping Length: 7.5m (24.6 ft) 230V 60Hz

A) Indoor unit capacity: Heating (2.0: CS-ME7QKUA), service mode frequency = 39 Hz

Page 42

 Heating Characteristic [Condition] Room temperature: 69.98°F (21.1°C) (DBT), 60.08°F (15.6°C) (WBT) Operation condition: High fan speed Piping Length: 7.5m (24.6 ft) 230V 60Hz

B) Indoor unit capacity: Heating (2.5: CS-E9NKUAW), service mode frequency = 39 Hz

Page 43

 Heating Characteristic [Condition] Room temperature: 69.98°F (21.1°C) (DBT), 60.08°F (15.6°C) (WBT) Operation condition: High fan speed Piping Length: 7.5m (24.6 ft) 230V 60Hz

C) Indoor unit capacity: Heating (3.2: CS-E12NKUAW), service mode frequency = 47 Hz

Page 44

 Heating Characteristic [Condition] Room temperature: 69.98°F (21.1°C) (DBT), 60.08°F (15.6°C) (WBT) Operation condition: High fan speed Piping Length: 7.5m (24.6 ft) 230V 60Hz

D) Indoor unit capacity: Heating (5.0: CS-E18NKUA), service mode frequency = 55 Hz

Page 45

17.1.2 Two Indoor Unit Operation

 Cooling Characteristic [Condition] Room temperature: 80.06°F (26.7°C) (DBT), 66.92°F (19.4°C) (WBT) Operation condition: High fan speed Piping Length: 7.5m (24.6 ft) 230V 60Hz

A) Indoor unit capacity: Cooling (2.0 + 2.5: CS-ME7QKUA + CS-E9NKUAW), service mode frequency = 49 Hz

Page 46

 Cooling Characteristic [Condition] Room temperature: 80.06°F (26.7°C) (DBT), 66.92°F (19.4°C) (WBT) Operation condition: High fan speed Piping Length: 7.5m (24.6 ft) 230V 60Hz

B) Indoor unit capacity: Cooling (2.0 + 3.2: CS-ME7QKUA + CS-E12NKUAW), service mode frequency = 49 Hz

Page 47

 Cooling Characteristic [Condition] Room temperature: 80.06°F (26.7°C) (DBT), 66.92°F (19.4°C) (WBT) Operation condition: High fan speed Piping Length: 7.5m (24.6 ft) 230V 60Hz

C) Indoor unit capacity: Cooling (2.0 + 5.0: CS-ME7QKUA + CS-E18NKUA), service mode frequency = 51 Hz

Page 48

 Cooling Characteristic [Condition] Room temperature: 80.06°F (26.7°C) (DBT), 66.92°F (19.4°C) (WBT) Operation condition: High fan speed Piping Length: 7.5m (24.6 ft) 230V 60Hz

D) Indoor unit capacity: Cooling (2.5 + 3.2: CS-E9NKUAW + CS-E12NKUAW), service mode frequency = 49 Hz

Page 49

 Cooling Characteristic [Condition] Room temperature: 80.06°F (26.7°C) (DBT), 66.92°F (19.4°C) (WBT) Operation condition: High fan speed Piping Length: 7.5m (24.6 ft) 230V 60Hz

E) Indoor unit capacity: Cooling (2.5 + 5.0: CS-E9NKUAW + CS-E18NKUA), service mode frequency = 51 Hz

Page 50

 Cooling Characteristic [Condition] Room temperature: 80.06°F (26.7°C) (DBT), 66.92°F (19.4°C) (WBT) Operation condition: High fan speed Piping Length: 7.5m (24.6 ft) 230V 60Hz

F) Indoor unit capacity: Cooling (3.2 + 5.0: CS-E12NKUAW + CS-E18NKUA), service mode frequency = 53 Hz

Page 51

 Heating Characteristic [Condition] Room temperature: 69.98°F (21.1°C) (DBT), 60.08°F (15.6°C) (WBT) Operation condition: High fan speed Piping Length: 7.5m (24.6 ft) 230V 60Hz

A) Indoor unit capacity: Heating (2.0 + 2.5: CS-ME7QKUA + CS-E9NKUAW), service mode frequency = 58 Hz

Page 52

 Heating Characteristic [Condition] Room temperature: 69.98°F (21.1°C) (DBT), 60.08°F (15.6°C) (WBT) Operation condition: High fan speed Piping Length: 7.5m (24.6 ft) 230V 60Hz

B) Indoor unit capacity: Heating (2.0 + 3.2: CS-ME7QKUA + CS-E12NKUAW), service mode frequency = 64 Hz

Page 53

 Heating Characteristic [Condition] Room temperature: 69.98°F (21.1°C) (DBT), 60.08°F (15.6°C) (WBT) Operation condition: High fan speed Piping Length: 7.5m (24.6 ft) 230V 60Hz

C) Indoor unit capacity: Heating (2.0 + 5.0: CS-ME7QKUA + CS-E18NKUA), service mode frequency = 68 Hz

Page 54

 Heating Characteristic [Condition] Room temperature: 69.98°F (21.1°C) (DBT), 60.08°F (15.6°C) (WBT) Operation condition: High fan speed Piping Length: 7.5m (24.6 ft) 230V 60Hz

D) Indoor unit capacity: Heating (2.5 + 3.2: CS-E9NKUAW + CS-E12NKUAW), service mode frequency = 64 Hz

Page 55

 Heating Characteristic [Condition] Room temperature: 69.98°F (21.1°C) (DBT), 60.08°F (15.6°C) (WBT) Operation condition: High fan speed Piping Length: 7.5m (24.6 ft) 230V 60Hz

E) Indoor unit capacity: Heating (2.5 + 5.0: CS-E9NKUAW + CS-E18NKUA), service mode frequency = 68 Hz

Page 56

 Heating Characteristic [Condition] Room temperature: 69.98°F (21.1°C) (DBT), 60.08°F (15.6°C) (WBT) Operation condition: High fan speed Piping Length: 7.5m (24.6 ft) 230V 60Hz

F) Indoor unit capacity: Heating (3.2 + 5.0: CS-E12NKUAW + CS-E18NKUA), service mode frequency = 73 Hz

Page 57

17.1.3 Three Indoor Unit Operation

 Cooling Characteristic [Condition] Room temperature: 80.06°F (26.7°C) (DBT), 66.92°F (19.4°C) (WBT) Operation condition: High fan speed Piping Length: 7.5m (24.6 ft) 230V 60Hz

A) Indoor unit capacity: Cooling (2.0 + 2.5 + 3.2: CS-ME7QKUA + CS-E9NKUAW + CS-E12NKUAW),

service mode frequency = 55 Hz

Page 58

 Cooling Characteristic [Condition] Room temperature: 80.06°F (26.7°C) (DBT), 66.92°F (19.4°C) (WBT) Operation condition: High fan speed Piping Length: 7.5m (24.6 ft) 230V 60Hz

B) Indoor unit capacity: Cooling (2.0 + 2.5 + 5.0: CS-ME7QKUA + CS-E9NKUAW + CS-E18NKUA),

service mode frequency = 57 Hz

Page 59

 Cooling Characteristic [Condition] Room temperature: 80.06°F (26.7°C) (DBT), 66.92°F (19.4°C) (WBT) Operation condition: High fan speed Piping Length: 7.5m (24.6 ft) 230V 60Hz

C) Indoor unit capacity: Cooling (2.0 + 3.2 + 5.0: CS-ME7QKUA + CS-E12NKUAW + CS-E18NKUA),

service mode frequency = 59 Hz

Page 60

 Cooling Characteristic [Condition] Room temperature: 80.06°F (26.7°C) (DBT), 66.92°F (19.4°C) (WBT) Operation condition: High fan speed Piping Length: 7.5m (24.6 ft) 230V 60Hz

D) Indoor unit capacity: Cooling (2.5 + 3.2 + 5.0: CS-E9NKUAW + CS-E12NKUAW + CS-E18NKUA),

service mode frequency = 59 Hz

Page 61

 Heating Characteristic [Condition] Room temperature: 69.98°F (21.1°C) (DBT), 60.08°F (15.6°C) (WBT) Operation condition: High fan speed Piping Length: 7.5m (24.6 ft) 230V 60Hz

A) Indoor unit capacity: Heating (2.0 + 2.5 + 3.2: CS-ME7QKUA + CS-E9NKUAW + CS-E12NKUAW),

service mode frequency = 77 Hz

Page 62

 Heating Characteristic [Condition] Room temperature: 69.98°F (21.1°C) (DBT), 60.08°F (15.6°C) (WBT) Operation condition: High fan speed Piping Length: 7.5m (24.6 ft) 230V 60Hz

B) Indoor unit capacity: Heating (2.0 + 2.5 + 5.0: CS-ME7QKUA + CS-E9NKUAW + CS-E18NKUA),

service mode frequency = 77 Hz

Page 63

 Heating Characteristic [Condition] Room temperature: 69.98°F (21.1°C) (DBT), 60.08°F (15.6°C) (WBT) Operation condition: High fan speed Piping Length: 7.5m (24.6 ft) 230V 60Hz

C) Indoor unit capacity: Heating (2.0 + 3.2 + 5.0: CS-ME7QKUA + CS-E12NKUAW + CS-E18NKUA),

service mode frequency = 82 Hz

Page 64

 Heating Characteristic [Condition] Room temperature: 69.98°F (21.1°C) (DBT), 60.08°F (15.6°C) (WBT) Operation condition: High fan speed Piping Length: 7.5m (24.6 ft) 230V 60Hz

D) Indoor unit capacity: Heating (2.5 + 3.2 + 5.0: CS-E9NKUAW + CS-E12NKUAW + CS-E18NKUA),

service mode frequency = 82 Hz

Page 65

17.1.4 Four Indoor Unit Operation

 Cooling Characteristic [Condition] Room temperature: 80.06°F (26.7°C) (DBT), 66.92°F (19.4°C) (WBT) Operation condition: High fan speed Piping Length: 7.5m (24.6 ft) 230V 60Hz

A) Indoor unit capacity: Cooling (2.0 + 2.5 + 3.2 + 5.0: CS-ME7QKUA + CS-E9NKUAW + CS-E12NKUAW +

CS-E18NKUA), service mode frequency = 65 Hz

Page 66

 Heating Characteristic [Condition] Room temperature: 69.98°F (21.1°C) (DBT), 60.08°F (15.6°C) (WBT) Operation condition: High fan speed Piping Length: 7.5m (24.6 ft) 230V 60Hz

A) Indoor unit capacity: Heating (2.0 + 2.5 + 3.2 + 5.0: CS-ME7QKUA + CS-E9NKUAW + CS-E12NKUAW +

CS-E18NKUA), service mode frequency = 86 Hz

Page 67

17.1.5 Five Indoor Unit Operation

 Cooling Characteristic [Condition] Room temperature: 80.06°F (26.7°C) (DBT), 66.92°F (19.4°C) (WBT) Operation condition: High fan speed Piping Length: 7.5m (24.6 ft) 230V 60Hz

A) Indoor unit capacity: Cooling (2.0 + 2.5 + 3.2 + 3.2 + 5.0: CS-ME7QKUA + CS-E9NKUAW + CS-E12NKUAW +

CS-E12NKUAW + CS-E18NKUA), service mode frequency = 75 Hz

Page 68

 Heating Characteristic [Condition] Room temperature: 69.98°F (21.1°C) (DBT), 60.08°F (15.6°C) (WBT) Operation condition: High fan speed Piping Length: 7.5m (24.6 ft) 230V 60Hz

A) Indoor unit capacity: Heating (2.0 + 2.5 + 3.2 + 3.2 + 5.0: CS-ME7QKUA + CS-E9NKUAW + CS-E12NKUAW +

CS-E12NKUAW + CS-E18NKUA), service mode frequency = 95 Hz

Page 69

18. Exploded View and Replacement Parts List

Note The above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts.

Page 70

SAFETY REF.NO. DESCRIPTION & NAME QTY. CU-5E36QBU REMARK

1 CHASSIS ASSY 1 CWD52K1364A

2 SOUND PROOF BOARD 1 CWH151367

3 FAN MOTOR BRACKET 1 CWD54K1081

4 SCREW-BRACKET FAN MOTOR 2 CWH551217

5 CONDENSER COMPLETE 1 CWB32C3961

7 SCREW-FAN MOTOR MOUNT 4 CWH551323

8 PROPELLER FAN ASSY 1 CWH03K1075

9 NUT 1 CWH561092

12 BUSHING - COMPRESSOR MOUNT 3 CWH50055

13 NUT-COMPRESSOR MOUNT 3 CWH561049

14 CRANKCASE HEATER 1 CWA341098

16 ACCUMULATOR 1 CWB131064

17 3-WAY VALVE (GAS) 1 CWB011769

18 3-WAY VALVE (LIQUID) 1 CWB011770

19 HOLDER COUPLING 1 CWH351262

20 STRAINER 1 CWB11061

21 STRAINER 5 CWB111081

22 EXPANSION VALVE 5 CWB051029

23 4-WAYS VALVE 1 CWB001057

24 DISCHARGE MUFFLER 1 CWB121042

25 HEATING PRESSURE SWITCH 1 CWA101013

26 FLARE NUT (1/4) 5 CWT251030

27 FLARE NUT (3/8) 5 CWT251031

28 SOUND PROOF MATERIAL 1 CWG302804

31 SOUND PROOF MATERIAL 1 CWG302801

32 SENSOR COMPLETE – DIS (CN-DIS) 1 CWA50C3091 O

38 SENSOR-COMPLETE – DEF (CN-TH2) 1 CWA50C3205 O

40 SENSOR-COMPLETE (CN-TH4) 1 CWA50C3207 O

41 SENSOR-COMPLETE (CN-TH3) 1 CWA50C3208 O

50 CONTROL BOARD COVER 1 CWH131613

51 CABINET REAR PLATE 1 CWE02C1082

52 CABINET TOP PLATE 1 CWE03C1159

53 CONTROL BOARD COVER 1 CWE04C1497

54 CABINET FRONT PLATE 1 CWE06C1510

55 CABINET SIDE PLATE 1 CWE041792A

56 CABINET SIDE PLATE 1 CWE06C1511

57 WIRE NET 1 CWD041203A

58 HANDLE 3 CWE161021

59 TERMINAL COVER 1 CWH171039A

60 NUT-TERMINAL COVER 1 CWH7080300J

6 FAN MOTOR 1 L6CBYYYL0116 O

10 COMPRESSOR 1 5KD240XAL21 O

33 V-COIL COMPLETE (4 WAY VALVE) 1 CWA43C2392 O

34 V-COIL COMPLETE (EXPAND VALVE-WHITE CN-EV1) 1 CWA43C2587 O

35 V-COIL COMPLETE (EXPAND VALVE-YELLOW CN-EV2) 1 CWA43C2588 O

36 V-COIL COMPLETE (EXPAND VALVE-BLUE CN-EV3) 1 CWA43C2589 O

37 V-COIL COMPLETE (EXPAND VALVE-RED CN-EV4) 1 CWA43C2590 O

SENSOR COMPLETE (OUTLET TEMP SENSOR) (CN-TH1)

42 V-COIL COMPLETE (EXPAND VALVE-BLACK CN-EV5) 1 CWA43C2591 O

43 ELECTRONIC CONTROLLER (MAIN) 1 CWA73C8320R O

44 ELECT. CONTROLLER -NOISE FILTER 1 CWA73C8058 O

45 ELECTRONIC CONTROLLER (DISPLAY) 1 CWA747833 O

47 REACTOR 1 G0C602J00009

48 TERMINAL BOARD ASSY (L, N) 1 CWA28K1195

49 TERMINAL BOARD ASSY (1, 2, 3) 5 CWA28K1196

1 CWA50C3206 O

Page 71

SAFETY REF.NO. DESCRIPTION & NAME QTY. CU-5E36QBU REMARK

61 INSTALLATION INSTRUCTION 1 CWF616290

62 INSTALLATION INSTRUCTION 1 CWF616291

74 ACCESSORY CO. (DRAIN ELBOW) 1 CWG87C900

78 TUBE ASS’Y (LIQUID SIDE) 1 CWT029390

79 MANIFOLD TUBE ASS’Y (GAS SIDE) 1 CWT029391

80 BAG 1 CWG861520

81 BASE BOARD-COMPLETE 1 CWG62C1172

82 SHOCK ABSORBER 2 CWG713581

83 SHOCK ABSORBER 1 CWG713582

84 C.C. CASE 1 CWG569517

86 HOLDER SENSOR 5 CWH321111

(Note)

 All parts are supplied from PAPAMY, Malaysia (Vendor Code: 00029488).  “O” marked parts are recommended to be kept in stock.

[PAPAMY] Printed in Malaysia

FY1213-0